using System;
using System.Collections.Generic;
using UnityEngine;

public class uGUIListViewer : MonoBehaviour
{
	public Transform parentItemArea
	{
		get
		{
			return this.m_ParentItemArea;
		}
		set
		{
			this.m_ParentItemArea = value;
		}
	}

	public GameObject tempItem
	{
		get
		{
			return this.m_TempItem;
		}
		set
		{
			this.m_TempItem = value;
		}
	}

	public GameObject[] ItemArray
	{
		get
		{
			return this.m_ItemArray;
		}
	}

	private void Awake()
	{
		if (this.m_TempItem)
		{
			this.m_TempItem.SetActive(false);
		}
	}

	public void Show<T>(GameObject item, int itemCount, Action<int, T> callbackSetUp = null) where T : Component
	{
		if (item == null)
		{
			Debug.LogError("[uGUIListViewer.cs]項目のテンプレートにnullが指定されました");
			return;
		}
		this.m_TempItem = item;
		this.Show<T>(itemCount, callbackSetUp);
	}

	public void Show<T>(int itemCount, Action<int, T> callbackSetUp = null) where T : Component
	{
		if (this.m_TempItem == null)
		{
			Debug.LogError("[uGUIListViewer.cs]項目のテンプレートが設定されていません");
			return;
		}
		T component = this.m_TempItem.GetComponent<T>();
		if (component == null)
		{
			Debug.LogError("[uGUIListViewer.cs]項目のテンプレートに「" + typeof(T).Name + "」コンポーネントが見つかりませんでした");
			return;
		}
		this.SetUpList<T>(component, itemCount, callbackSetUp);
	}

	protected void SetUpList<T>(T tempItem, int itemCount, Action<int, T> callbackSetUp) where T : Component
	{
		Transform parentItemArea = this.m_ParentItemArea;
		if (parentItemArea == null)
		{
			Debug.LogError("[uGUIListViewer.cs]項目を並べるエリアが存在しません\nParent Item Area に項目を並べたいオブジェクトを設定してください");
			return;
		}
		if (tempItem == null)
		{
			Debug.LogError("[uGUIListViewer.cs]項目のテンプレートが存在しません\nTemp Item に項目として並べたいオブジェクトを設定してください");
			return;
		}
		this.ResetList();
		this.m_ItemArray = new GameObject[itemCount];
		for (int i = 0; i < itemCount; i++)
		{
			T arg = UnityEngine.Object.Instantiate<T>(tempItem);
			arg.gameObject.SetActive(true);
			Transform component = arg.GetComponent<Transform>();
			if (component.parent != parentItemArea)
			{
				component.SetParent(parentItemArea, false);
			}
			if (callbackSetUp != null)
			{
				callbackSetUp(i, arg);
			}
			this.m_ItemArray[i] = arg.gameObject;
		}
	}

	public void ResetList()
	{
		if (this.m_ItemArray != null)
		{
			for (int i = 0; i < this.m_ItemArray.Length; i++)
			{
				this.m_ItemArray[i].transform.SetParent(null, false);
				UnityEngine.Object.Destroy(this.m_ItemArray[i]);
			}
		}
		this.m_ItemArray = null;
	}

	public void RemoveItem(GameObject obj)
	{
		if (this.m_ItemArray != null)
		{
			List<GameObject> list = new List<GameObject>(this.m_ItemArray.Length);
			for (int i = 0; i < this.m_ItemArray.Length; i++)
			{
				if (obj != this.m_ItemArray[i])
				{
					list.Add(this.m_ItemArray[i]);
				}
				else
				{
					this.m_ItemArray[i].transform.SetParent(null, false);
					UnityEngine.Object.Destroy(this.m_ItemArray[i]);
				}
			}
			this.m_ItemArray = list.ToArray();
		}
	}

	[SerializeField]
	private Transform m_ParentItemArea;

	[SerializeField]
	private GameObject m_TempItem;

	private GameObject[] m_ItemArray;
}